Ethane, 1,1,1-trichloro-
- Formula: C2H3Cl3
- Molecular weight: 133.404
- IUPAC Standard InChIKey: UOCLXMDMGBRAIB-UHFFFAOYSA-N
- CAS Registry Number: 71-55-6
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Species with the same structure:
- Other names: α-Trichloroethane; Aerothene TT; Chlorotene; Chlorothane NU; Chlorothene; Chlorothene NU; Chlorothene VG; Chlorten; Inhibisol; Methylchloroform; Methyltrichloromethane; Trichloroethane; 1,1,1-Trichloroethane; CH3CCl3; α-T; Chloroethene NU; Chloroform, methyl-; NCI-C04626; Solvent 111; Trichloro-1,1,1-ethane; 1,1,1-Trichloraethan; 1,1,1-Tricloroetano; CF 2; Chloroetene; Chloroethene; Chlorothene SM; Ethana NU; ICI-CF 2; Rcra waste number U226; Tafclean; 1,1,1-TCE; Trichloromethylmethane; Tri-ethane; UN 2831; 1,1,1-Trichlorethane; Distillex DS1; Ethana; Solvethane; Cleanite; F 140a; Genklene LB; HCC 140a; Three One A; Three One S
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Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled as indicated in comments:
DRB - Donald R. Burgess, Jr.
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | -145. ± 2. | kJ/mol | Review | Manion, 2002 | derived from recommended ΔfHliquid° and ΔvapH°; DRB |
ΔfH°gas | -144.4 ± 1.6 | kJ/mol | Ccb | Hu, Sinke, et al., 1972 | Reanalyzed by Cox and Pilcher, 1970, Original value = -146.0 ± 0.84 kJ/mol; see Hu and Sinke, 1969; ALS |
ΔfH°gas | -142.3 ± 1.4 | kJ/mol | Ccr | Mansson, Ringner, et al., 1971 | ALS |
Condensed phase thermochemistry data
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled as indicated in comments:
DRB - Donald R. Burgess, Jr.
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°liquid | -177. ± 2. | kJ/mol | Review | Manion, 2002 | weighted average of several measurements; DRB |
ΔfH°liquid | -174. | kJ/mol | Eqk | Levanova, Treger, et al., 1975 | Flow reactor at 50°C; ALS |
ΔfH°liquid | -178.6 ± 0.84 | kJ/mol | Ccb | Hu, Sinke, et al., 1972 | Reanalyzed by Cox and Pilcher, 1970, Original value = -176. ± 0.79 kJ/mol; see Hu and Sinke, 1969; ALS |
ΔfH°liquid | -174.8 ± 1.4 | kJ/mol | Ccr | Mansson, Ringner, et al., 1971 | ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°liquid | -1108.0 ± 0.79 | kJ/mol | Ccb | Hu, Sinke, et al., 1972 | see Hu and Sinke, 1969; ALS |
ΔcH°liquid | -1112.1 ± 1.3 | kJ/mol | Ccr | Mansson, Ringner, et al., 1971 | ALS |
Quantity | Value | Units | Method | Reference | Comment |
S°liquid | 226.7 | J/mol*K | N/A | Andon, Counsell, et al., 1973 | DH |
S°liquid | 227.48 | J/mol*K | N/A | Rubin, Levedahl, et al., 1944 | DH |
Constant pressure heat capacity of liquid
Cp,liquid (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
144.4 | 298.15 | Andon, Counsell, et al., 1973 | T = 10 to 310 K.; DH |
138.9 | 257.29 | Crowe and Smyth, 1950 | T = 117 to 260 K. Value is unsmoothed experimental datum.; DH |
144.31 | 299.59 | Rubin, Levedahl, et al., 1944 | T = 12 to 300 K. Value is unsmoothed experimental datum.; DH |
Constant pressure heat capacity of solid
Cp,solid (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
123. | 225. | Martin and Monti, 1988 | T = 10 to 225 K. Data given graphically and estimated from graph.; DH |
Phase change data
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled as indicated in comments:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
BS - Robert L. Brown and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing
CAL - James S. Chickos, William E. Acree, Jr., Joel F. Liebman, Students of Chem 202 (Introduction to the Literature of Chemistry), University of Missouri -- St. Louis
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 347.2 ± 0.2 | K | AVG | N/A | Average of 13 out of 15 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 240. ± 7. | K | AVG | N/A | Average of 9 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 243.13 | K | N/A | Andon, Counsell, et al., 1973, 2 | Crystal phase 1 phase; Uncertainty assigned by TRC = 0.02 K; TRC |
Ttriple | 240.1 | K | N/A | Crowe and Smyth, 1950, 2 | Crystal phase 1 phase; Uncertainty assigned by TRC = 0.2 K; TRC |
Ttriple | 240.2 | K | N/A | Rubin, Levedahl, et al., 1944, 2 | Crystal phase 1 phase; Uncertainty assigned by TRC = 0.2 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 548.4 | K | N/A | Majer and Svoboda, 1985 | |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 32.5 ± 0.1 | kJ/mol | AVG | N/A | Average of 6 values; Individual data points |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
29.86 | 347.2 | N/A | Majer and Svoboda, 1985 | |
33.313 | 286.53 | N/A | Rubin, Levedahl, et al., 1944 | P = 10.26 kPa; DH |
32.3 | 310. | A | Stephenson and Malanowski, 1987 | Based on data from 295. to 372. K.; AC |
30.5 | 364. | A | Stephenson and Malanowski, 1987 | Based on data from 349. to 408. K.; AC |
29.4 | 414. | A | Stephenson and Malanowski, 1987 | Based on data from 399. to 487. K.; AC |
29.5 | 494. | A | Stephenson and Malanowski, 1987 | Based on data from 479. to 545. K.; AC |
32.4 | 344. | N/A | Rao and Viswanath, 1977 | AC |
37.6 | 211. | N/A | Ambrose, Sprake, et al., 1973 | Based on data from 196. to 298. K.; AC |
33.4 | 279. | N/A | Rubin, Levedahl, et al., 1944 | Based on data from 268. to 290. K.; AC |
33.4 ± 0.1 | 284. | C | Rubin, Levedahl, et al., 1944 | AC |
Entropy of vaporization
ΔvapS (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
116.26 | 286.53 | Rubin, Levedahl, et al., 1944 | P; DH |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (bar)
T = temperature (K)
View plot Requires a JavaScript / HTML 5 canvas capable browser.
Temperature (K) | A | B | C | Reference | Comment |
---|---|---|---|---|---|
267.79 to 290.07 | 5.88607 | 2210.179 | 34.902 | Rubin, Levedahl, et al., 1944 | Coefficents calculated by NIST from author's data. |
Enthalpy of fusion
ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
1.88 | 240.1 | Andon, Counsell, et al., 1973, 2 | See also Domalski and Hearing, 1996.; AC |
Entropy of fusion
ΔfusS (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
1.02 | 205. | Domalski and Hearing, 1996 | CAL |
33.31 | 223.6 | ||
7.84 | 240.1 | ||
33.3 | 224.2 | ||
7.8 | 240.2 | ||
33.3 | 224.8 | ||
9.67 | 243.1 |
Temperature of phase transition
Ttrs (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|
225.0 | crystaline, II | crystaline, Ib | Hasebe and Yoshida, 1991 | DH |
236.7 | crystaline, Ia | liquid | Hasebe and Yoshida, 1991 | DH |
242.90 | crystaline, Ib | liquid | Hasebe and Yoshida, 1991 | DH |
Enthalpy of phase transition
ΔHtrs (kJ/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
7.490 | 224.80 | crystaline, II | crystaline, I | Andon, Counsell, et al., 1973 | DH |
2.350 | 243.13 | crystaline, I | liquid | Andon, Counsell, et al., 1973 | DH |
7.473 | 224.20 | crystaline, II | crystaline, I | Rubin, Levedahl, et al., 1944 | DH |
1.880 | 240.2 | crystaline, I | liquid | Rubin, Levedahl, et al., 1944 | H estimated because of errors in Cp above 225 K. Not used in calulation of entropy.; DH |
7.470 | 224.5 | crystaline, II | crystaline, I | Martin, 1982 | DH |
1.550 | 240.9 | crystaline, I | liquid | Martin, 1982 | DH |
0.210 | 205. | crystaline, III | crystaline, II | Crowe and Smyth, 1950 | DH |
7.450 | 223.6 | crystaline, II | crystaline, I | Crowe and Smyth, 1950 | DH |
1.880 | 240.1 | crystaline, I | liquid | Crowe and Smyth, 1950 | DH |
Entropy of phase transition
ΔStrs (J/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
33.32 | 224.80 | crystaline, II | crystaline, I | Andon, Counsell, et al., 1973 | DH |
9.67 | 243.13 | crystaline, I | liquid | Andon, Counsell, et al., 1973 | DH |
33.33 | 224.20 | crystaline, II | crystaline, I | Rubin, Levedahl, et al., 1944 | DH |
7.8 | 240.2 | crystaline, I | liquid | Rubin, Levedahl, et al., 1944 | H; DH |
33.3 | 224.5 | crystaline, II | crystaline, I | Martin, 1982 | DH |
6.43 | 240.9 | crystaline, I | liquid | Martin, 1982 | DH |
1.0 | 205. | crystaline, III | crystaline, II | Crowe and Smyth, 1950 | DH |
33.3 | 223.6 | crystaline, II | crystaline, I | Crowe and Smyth, 1950 | DH |
7.8 | 240.1 | crystaline, I | liquid | Crowe and Smyth, 1950 | DH |
Reaction thermochemistry data
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Henry's Law data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
By formula: C2H3Cl3 = C2H2Cl2 + HCl
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 56.9 | kJ/mol | Eqk | Levanova, Bushneva, et al., 1979 | liquid phase |
ΔrH° | 49.0 | kJ/mol | Eqk | Levanova, Bushneva, et al., 1979 | gas phase |
ΔrH° | 56.9 ± 2.1 | kJ/mol | Eqk | Levanova, Treger, et al., 1975 | liquid phase; solvent: Nitrobenzene; Flow reactor at 50°C |
By formula: C2H2Cl2 + HCl = C2H3Cl3
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -54.64 ± 0.84 | kJ/mol | Eqk | Hu, Sinke, et al., 1972 | gas phase; Heat of halogenation at 348-399 K |
By formula: C2H3Cl3 = C2H3Cl3
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 8.4 | kJ/mol | Ciso | Levanova, Treger, et al., 1975, 2 | gas phase |
Henry's Law data
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Rolf Sander
Henry's Law constant (water solution)
kH(T) = k°H exp(d(ln(kH))/d(1/T) ((1/T) - 1/(298.15 K)))
k°H = Henry's law constant for solubility in water at 298.15 K (mol/(kg*bar))
d(ln(kH))/d(1/T) = Temperature dependence constant (K)
k°H (mol/(kg*bar)) | d(ln(kH))/d(1/T) (K) | Method | Reference | Comment |
---|---|---|---|---|
0.058 | 3900. | L | N/A | |
0.068 | 3800. | M | N/A | |
0.060 | 3100. | M | N/A | |
0.071 | 4700. | C | N/A | |
0.059 | 3200. | X | N/A | |
0.053 | M | N/A | ||
0.057 | 3200. | M | N/A | |
0.087 | X | N/A | Value given here as cited in missing citation. | |
0.063 | 3700. | X | N/A | |
0.061 | 3500. | M | N/A | |
0.058 | 3400. | X | N/A | |
0.051 | 5200. | X | N/A | |
0.057 | 3400. | X | N/A | |
0.058 | 4000. | X | Barr and Newsham, 1987 | |
0.059 | 4100. | M | Gossett, 1987 | |
0.059 | 4100. | X | N/A | |
0.058 | 4200. | X | N/A | |
0.059 | 4300. | X | N/A | |
0.059 | 4300. | M | N/A | |
0.077 | 3200. | M | N/A | |
0.22 | 1700. | X | N/A | |
0.050 | 4400. | X | Leighton and Calo, 1981 | |
0.036 | L | N/A | ||
0.027 | 7000. | X | N/A | |
0.11 | 4600. | X | N/A | |
0.034 | V | N/A | ||
0.040 | V | N/A | Value at T = 293. K. | |
0.11 | V | N/A | Value at T = 275. K. | |
0.062 | V | N/A | ||
0.029 | M | Pearson and McConnell, 1975 | The same data was also published in missing citation. Value at T = 293. K. |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Manion, 2002
Manion, J.A.,
Evaluated Enthalpies of Formation of the Stable Closed Shell C1 and C2 Chlorinated Hydrocarbons,
J. Phys. Chem. Ref. Data, 2002, 31, 1, 123-172, https://doi.org/10.1063/1.1420703
. [all data]
Hu, Sinke, et al., 1972
Hu, A.T.; Sinke, G.C.; Mintz, M.J.,
The enthalpy of formation of 1,1,1-trichloroethane from enthalpy of combustion and equilibrium studies,
J. Chem. Thermodyn., 1972, 4, 239-245. [all data]
Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G.,
Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]
Hu and Sinke, 1969
Hu, A.T.; Sinke, G.C.,
Combustion calorimetry of some chlorinated organic compounds,
J. Chem. Thermodyn., 1969, 1, 507-513. [all data]
Mansson, Ringner, et al., 1971
Mansson, M.; Ringner, B.; Sunner, S.,
The enthalpies of combustion and formation of some simple chloroalkanes and chloralkenes 1,1,1-trichloroethane and 1,1-dichloroethene,
J. Chem. Thermodyn., 1971, 3, 547-551. [all data]
Levanova, Treger, et al., 1975
Levanova, S.V.; Treger, Yu.A.; Velichko, S.M.; Rozhnov, A.M.; Bshneva, L.I.; Talanov, A.I.,
Equilibrium of the vinylidene chloride-methylchloroform system,
Zh. Prikl. Khim. (Leningrad), 1975, 42, 480-481. [all data]
Andon, Counsell, et al., 1973
Andon, R.J.L.; Counsell, J.F.; Lee, D.A.; Martin, J.F.,
Thermodynamic properties of aliphatic halogen compounds. Part 2. Heat capacity of 1,1,1-trichloroethane,
J. Chem. Soc. Faraday Trans., 1973, I 69, 1721-1726. [all data]
Rubin, Levedahl, et al., 1944
Rubin, T.R.; Levedahl, B.H.; Yost, D.M.,
The heat capacity, heat of transition, vaporization, vapor pressure and entropy of 1,1,1-trichloroethane,
J. Am. Chem. Soc., 1944, 66, 279-282. [all data]
Crowe and Smyth, 1950
Crowe, R.W.; Smyth, C.P.,
Heat capacities, dielectric constants and molecular rotational freedom in solid trichloroethanes and disubstituted propanes,
J. Am. Chem. Soc., 1950, 72, 4009-4015. [all data]
Martin and Monti, 1988
Martin, C.A.; Monti, G.A.,
Specific heat analysis in 1,1,1-trichloroethane,
Thermochim. Acta, 1988, 134, 27-34. [all data]
Andon, Counsell, et al., 1973, 2
Andon, R.J.L.; Counsell, J.F.; Lee, D.A.; Martin, J.F.,
Thermodynamic properties of aliphatic halogen compounds. Part 2.---Heat capacity of 1,1,1-trichloroethane,
J. Chem. Soc., Faraday Trans. 1, 1973, 69, 0, 1721, https://doi.org/10.1039/f19736901721
. [all data]
Crowe and Smyth, 1950, 2
Crowe, R.W.; Smyth, C.P.,
Heat capacities, dielectric constants and molecular rotational freedom in solid trichloroethanes and disubstituted propanes,
J. Am. Chem. Soc., 1950, 72, 4009. [all data]
Rubin, Levedahl, et al., 1944, 2
Rubin, T.R.; Levedahl, B.H.; Yost, D.M.,
The heat capacity, heat of transition, vaporization, vapor pressure and entropy of 1,1,1-trichloroethane,
J. Am. Chem. Soc., 1944, 66, 279. [all data]
Majer and Svoboda, 1985
Majer, V.; Svoboda, V.,
Enthalpies of Vaporization of Organic Compounds: A Critical Review and Data Compilation, Blackwell Scientific Publications, Oxford, 1985, 300. [all data]
Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw,
Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2
. [all data]
Rao and Viswanath, 1977
Rao, Yaddanapudi J.; Viswanath, Dabir S.,
Integral isobaric heats of vaporization of benzene-chloroethane systems,
J. Chem. Eng. Data, 1977, 22, 1, 36-38, https://doi.org/10.1021/je60072a011
. [all data]
Ambrose, Sprake, et al., 1973
Ambrose, D.; Sprake, C.H.S.; Townsend, R.,
Thermodynamic properties of aliphatic halogen compounds. Part 1.---Vapour pressure and critical properties of 1,1,1-trichloroethane,
J. Chem. Soc., Faraday Trans. 1, 1973, 69, 0, 839, https://doi.org/10.1039/f19736900839
. [all data]
Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D.,
Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III,
J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985
. [all data]
Hasebe and Yoshida, 1991
Hasebe, T.; Yoshida, M.,
Polymorphism and molecular motions in 1,1,1-trichloroethane. Differential thermal analysis and 1H NMR, Fukushima Daigaku Kyoikugakubu Ronshu,
Rika Hokoku, 1991, 48, 5-8. [all data]
Martin, 1982
Martin, C.A.,
Specific heat anomalies in some organic compounds, Therm. Anal., Proc. Int. Conf.,
7th, 1982, 2, 829-835. [all data]
Levanova, Bushneva, et al., 1979
Levanova, s.V.; Bushneva, I.I.; Rodova, R.M.; Rozhnov, A.M.; Treger, Yu.A.; Aprelkin, A.S.,
Thermodynamic stability of chloroethanes in dehydrochlorination reactions,
J. Appl. Chem. USSR, 1979, 52, 1439-1442. [all data]
Levanova, Treger, et al., 1975, 2
Levanova, S.V.; Treger, Yu.A.; Velichko, S.M.; Rozhnov, A.M.; Khlestkov, A.I.; Pisarev, V.V.,
Liquid-phase hydrochlorination of symmetrical dichloroethylenes,
J. Appl. Chem. USSR, 1975, 48, 1628-1631, In original 1574. [all data]
Barr and Newsham, 1987
Barr, R.S.; Newsham, D.M.T.,
Phase Equilibrtia in Very Dilute Mixtures of Water and Chlorinated Hydrocarbons. Part I - Experimental Results,
Fluid Phase Equilibria, 1987, 35, 189-205. [all data]
Gossett, 1987
Gossett, J.M.,
Measurement of Henry's Law Constants for C1 and C2 Chlorinated Hydrocarbons,
Environ. Sci. Technol., 1987, 21, 202-208. [all data]
Leighton and Calo, 1981
Leighton, D.T.; Calo, J.M.,
Distribution Coefficients of Chlorinated Hydrocarbons in Dilute Air-Water Systems for Groundwater Contamination Applications,
J. Chem. Eng. Data, 1981, 26, 382-385. [all data]
Pearson and McConnell, 1975
Pearson, C.R.; McConnell, G.,
Chlorinated C1 and C2 Hydrocarbons in the Marine Environment,
Proc. R. Soc. London, B, 1975, 189, 305-332. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law data, References
- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid Cp,solid Constant pressure heat capacity of solid S°liquid Entropy of liquid at standard conditions Tboil Boiling point Tc Critical temperature Tfus Fusion (melting) point Ttriple Triple point temperature Ttrs Temperature of phase transition d(ln(kH))/d(1/T) Temperature dependence parameter for Henry's Law constant k°H Henry's Law constant at 298.15K ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion ΔrH° Enthalpy of reaction at standard conditions ΔvapH Enthalpy of vaporization ΔvapH° Enthalpy of vaporization at standard conditions ΔvapS Entropy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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